Bahrain's Sakhir circuit has filled troublesome drains with concrete and carried out additional welding work after loose covers halted last week's Formula One testing... read more »

After a loose drain cover caused a heavy crash for Romain Grosjean and a red flag in Malaysia, Charlie Whiting insists every drain cover will be examined overnight to avoid a... read more »

The FIA believes a welding failure led to a drain cover becoming dislodged and causing Romain Grosjean to crash during Formula 1 Malaysian Grand Prix practice read more »

Video: Bottas in welding competition read more »